Lumens are a measure of brightness

So, for example, if you compare a Smart Led Panel Light that outputs 900 lumens to a smart LED panel light that outputs 2000 lumens, a smart LED panel light that outputs 2000 lumens will be brighter than a smart LED panel light that outputs 900 lumens. The more lumens the lamp emits, the brighter the lamp becomes.

This means that a good measure of a lamp's efficiency is lumens per watt (lm/W). A typical 100-watt incandescent light bulb uses 100 watts of power and outputs about 1,600 lumens. Meanwhile, a 14-17 watt LED bulb can also put out about 1,600 lumens. This means you get more light with less power, saving you on your electricity bill.

The same principle applies to any type of lighting device: smart bulbs, Led Panel Lights or others. The more lumens emitted, the brighter the output device will be.

Know the Lighting Facts tab

To address this, the FTC has instituted a requirement that any light bulbs sold in the United States be packaged with the "Lighting Facts" label. The label shows the bulb's brightness in lumens, estimated annual energy cost, lifespan, and color temperature.

Other countries have similar labels showing light intensity or energy efficiency, such as India's BEE Star Label.

Instead of relying on a general understanding of how much light a particular wattage bulb should produce, you can now compare by the brightness (in lumens) of a bulb or other light source.